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    <title>阴影</title>
    <style>
      /*参数顺序为：颜色，水平偏移，垂直偏移，模糊度。*/
      h2 {
        text-shadow: rgba(13, 6, 89, 0.8) 3px 3px 5px;
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    <article>
      <h2>houdunren.com</h2>
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